package com.platform.common.util.encrypt;

/**
 * 
 * Description: DES加解密
 */
public class DES {
	private static int[] KnL = new int[32];

	private static int[] KnR = new int[32];

	private static int[] Kn3 = new int[32];

	// private int[] encryptKeys = new int[32];
	// private int[] decryptKeys = new int[32];
	//
	// private int[] tempInts = new int[2];

	public DES() {
	}

	/**
	 * make two key, for next step.
	 * <p>
	 * depends on <code>des2key()</code> & <code>D2des()</code>
	 * </p>
	 * 
	 * @param tmpkey
	 *            input the 16bit char.
	 * @param outkey
	 *            results of 16bit key.
	 */
	public void make2key(char[] aptr, char[] kptr) {
		int i;
		int[] savek = new int[64];

		cpDkey(savek);
		des2key(Df_Key, true);
		for (i = 0; i < 16; i++) {
			kptr[i] = Df_Key[i];
		}
		boolean first = true;
		int ct = 0;
		while ((aptr[ct] != '\0') || first) {
			int cts = 0;
			for (i = 0; i < 16 && (aptr[ct] != '\0'); i++) {
				kptr[cts++] ^= aptr[ct] & 0x7f;
				aptr[ct] = '\0';
				if (ct < aptr.length - 1) {
					ct++;
				}
			}
			D2des(kptr, kptr);
			first = false;
		}
		useDkey(savek);
	}

	/**
	 * 8-byte key into internal keys.
	 * 
	 * @param keyBlock
	 *            8-byte
	 * @param encrypting
	 *            model
	 * @param KnL
	 *            32-int
	 */
	public void deskey(char[] keyBlock, boolean encrypting, int[] KnL) {

		int i, j, l, m, n;
		int[] pc1m = new int[56];
		int[] pcr = new int[56];
		int[] kn = new int[32];

		for (j = 0; j < 56; ++j) {
			l = pc1[j];
			m = l & 07;
			pc1m[j] = ((keyBlock[l >>> 3] & bytebit[m]) != 0) ? 1 : 0;
		}

		for (i = 0; i < 16; ++i) {

			if (encrypting)
				m = i << 1;
			else
				m = (15 - i) << 1;
			n = m + 1;
			kn[m] = kn[n] = 0;
			for (j = 0; j < 28; ++j) {
				l = j + totrot[i];
				if (l < 28)
					pcr[j] = pc1m[l];
				else
					pcr[j] = pc1m[l - 28];
			}
			for (j = 28; j < 56; ++j) {
				l = j + totrot[i];
				if (l < 56)
					pcr[j] = pc1m[l];
				else
					pcr[j] = pc1m[l - 28];
			}
			for (j = 0; j < 24; ++j) {
				if (pcr[pc2[j]] != 0)
					kn[m] |= bigbyte[j];
				if (pcr[pc2[j + 24]] != 0)
					kn[n] |= bigbyte[j];
			}
		}

		cookey(kn, KnL);
	}

	/**
	 * turn two key into internal key...
	 * 
	 * @param keyBlock
	 *            16-size of char array
	 * @param encrypting
	 *            model
	 * @param KnR
	 *            32-int
	 * @param Kn3
	 *            32-int
	 */
	public void des2key(char[] keyBlock, boolean encrypting) {
		boolean revmod = (encrypting == true ? false : true);
		char[] rightKey = new char[8];
		char[] lefttKey = new char[8];
		for (int k = 0; k < 8; k++) {
			rightKey[k] = keyBlock[8 + k];
			lefttKey[k] = keyBlock[k];
		}
		deskey(rightKey, revmod, KnR);
		// cpkey(DES.KnR);
		deskey(lefttKey, encrypting, Kn3);
		for (int i = 0; i < 32; i++) {
			DES.KnL[i] = DES.Kn3[i];
		}
		// cpkey(DES.Kn3);
	}

	/**
	 * DES 8 byte/int for processing. 8 byte * 8 = 64 bit, actually only 56 bit
	 * will be used.
	 * 
	 * @param inInts
	 *            输入8个int
	 * @param outInts
	 *            输入8个int,结果
	 * @param keys
	 *            密钥
	 */
	public void des(int[] inInts, int[] outInts, int[] keys) {

		int fval, work, right, leftt;
		int round;
		int keysi = 0;

		leftt = inInts[0];
		right = inInts[1];

		work = ((leftt >>> 4) ^ right) & 0x0f0f0f0f;
		right ^= work;
		leftt ^= (work << 4);

		work = ((leftt >>> 16) ^ right) & 0x0000ffff;
		right ^= work;
		leftt ^= (work << 16);

		work = ((right >>> 2) ^ leftt) & 0x33333333;
		leftt ^= work;
		right ^= (work << 2);

		work = ((right >>> 8) ^ leftt) & 0x00ff00ff;
		leftt ^= work;
		right ^= (work << 8);
		right = (right << 1) | ((right >>> 31) & 1);

		work = (leftt ^ right) & 0xaaaaaaaa;
		leftt ^= work;
		right ^= work;
		leftt = (leftt << 1) | ((leftt >>> 31) & 1);

		for (round = 0; round < 8; ++round) {
			work = (right << 28) | (right >>> 4);
			work ^= keys[keysi++];
			fval = SP7[work & 0x0000003f];
			fval |= SP5[(work >>> 8) & 0x0000003f];
			fval |= SP3[(work >>> 16) & 0x0000003f];
			fval |= SP1[(work >>> 24) & 0x0000003f];
			work = right ^ keys[keysi++];
			fval |= SP8[work & 0x0000003f];
			fval |= SP6[(work >>> 8) & 0x0000003f];
			fval |= SP4[(work >>> 16) & 0x0000003f];
			fval |= SP2[(work >>> 24) & 0x0000003f];
			leftt ^= fval;
			work = (leftt << 28) | (leftt >>> 4);
			work ^= keys[keysi++];
			fval = SP7[work & 0x0000003f];
			fval |= SP5[(work >>> 8) & 0x0000003f];
			fval |= SP3[(work >>> 16) & 0x0000003f];
			fval |= SP1[(work >>> 24) & 0x0000003f];
			work = leftt ^ keys[keysi++];
			fval |= SP8[work & 0x0000003f];
			fval |= SP6[(work >>> 8) & 0x0000003f];
			fval |= SP4[(work >>> 16) & 0x0000003f];
			fval |= SP2[(work >>> 24) & 0x0000003f];
			right ^= fval;
		}

		right = (right << 31) | (right >>> 1);
		work = (leftt ^ right) & 0xaaaaaaaa;
		leftt ^= work;
		right ^= work;
		leftt = (leftt << 31) | (leftt >>> 1);
		work = ((leftt >>> 8) ^ right) & 0x00ff00ff;
		right ^= work;
		leftt ^= (work << 8);
		work = ((leftt >>> 2) ^ right) & 0x33333333;
		right ^= work;
		leftt ^= (work << 2);
		work = ((right >>> 16) ^ leftt) & 0x0000ffff;
		leftt ^= work;
		right ^= (work << 16);
		work = ((right >>> 4) ^ leftt) & 0x0f0f0f0f;
		leftt ^= work;
		right ^= (work << 4);
		outInts[0] = right;
		outInts[1] = leftt;
	}

	/**
	 * 二重des加密,8*2=16位长度计算.
	 * 
	 * @param from
	 * @param into
	 */
	public void D2des(char[] from, char[] into) {
		char[] fromR = new char[8];
		char[] fromL = new char[8];
		char[] intoR = new char[8];
		char[] intoL = new char[8];
		for (int i = 0; i < 8; i++) {
			fromL[i] = from[i];
			fromR[i] = from[i + 8];
		}
		int right[] = new int[2];
		int leftt[] = new int[2];

		scrunch(fromL, leftt);
		scrunch(fromR, right);

		// 1
		des(leftt, leftt, KnL);
		des(right, right, KnL);

		int swap = leftt[1];
		leftt[1] = right[0];
		right[0] = swap;
		// 2
		des(leftt, leftt, KnR);
		des(right, right, KnR);
		swap = leftt[1];
		leftt[1] = right[0];
		right[0] = swap;
		// 3
		des(leftt, leftt, Kn3);
		des(right, right, Kn3);

		unscrunch(leftt, intoL);
		unscrunch(right, intoR);
		for (int i = 0; i < 8; i++) {
			into[i] = intoL[i];
			into[i + 8] = intoR[i];
		}
	}

	/**
	 * encrypts an array, which the length must be a multiple of 8, <br>
	 * for testing methods. <br>
	 * DO NOT use it as encrypting.
	 * 
	 * @param clearText
	 * @return
	 */
	byte[] encrypt(byte[] clearText) {

		int length = clearText.length;

		if (length % 8 != 0) {
			// System.err.println("Array must be a multiple of 8");
			return null;
		}

		byte[] cipherText = new byte[length];
		int count = length / 8;

		for (int i = 0; i < count; i++) {
			// encrypt(clearText, i * 8, cipherText, i * 8);
		}

		return cipherText;
	}

	/**
	 * decrypts an array, which the length must be a multiple of 8,<br>
	 * for testing methods. <br>
	 * DO NOT use it as encrypting.
	 * 
	 * @param cipherText
	 * @return
	 */
	byte[] decrypt(byte[] cipherText) {

		int length = cipherText.length;

		if (length % 8 != 0) {
			// System.out.println("Array must be a multiple of 8");
			return null;
		}

		byte[] clearText = new byte[length];
		int count = length / 8;

		for (int i = 0; i < count; i++) {
			// encrypt(cipherText, i * 8, clearText, i * 8);
		}
		return clearText;
	}

	// Tables,
	// permutations,
	// S-boxes,
	private static byte[] bytebit = { (byte) 0x80, (byte) 0x40, (byte) 0x20, (byte) 0x10, (byte) 0x08, (byte) 0x04,
			(byte) 0x02, (byte) 0x01 };

	private static int[] bigbyte = { 0x800000, 0x400000, 0x200000, 0x100000, 0x080000, 0x040000, 0x020000, 0x010000,
			0x008000, 0x004000, 0x002000, 0x001000, 0x000800, 0x000400, 0x000200, 0x000100, 0x000080, 0x000040,
			0x000020, 0x000010, 0x000008, 0x000004, 0x000002, 0x000001 };

	private static char Df_Key[] = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76,
			0x54, 0x32, 0x10, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67 };

	private static int[] totrot = { 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28 };

	private static byte[] pc1 = { (byte) 56, (byte) 48, (byte) 40, (byte) 32, (byte) 24, (byte) 16, (byte) 8, (byte) 0,
			(byte) 57, (byte) 49, (byte) 41, (byte) 33, (byte) 25, (byte) 17, (byte) 9, (byte) 1, (byte) 58, (byte) 50,
			(byte) 42, (byte) 34, (byte) 26, (byte) 18, (byte) 10, (byte) 2, (byte) 59, (byte) 51, (byte) 43,
			(byte) 35, (byte) 62, (byte) 54, (byte) 46, (byte) 38, (byte) 30, (byte) 22, (byte) 14, (byte) 6,
			(byte) 61, (byte) 53, (byte) 45, (byte) 37, (byte) 29, (byte) 21, (byte) 13, (byte) 5, (byte) 60,
			(byte) 52, (byte) 44, (byte) 36, (byte) 28, (byte) 20, (byte) 12, (byte) 4, (byte) 27, (byte) 19,
			(byte) 11, (byte) 3 };

	private static byte[] pc2 = { (byte) 13, (byte) 16, (byte) 10, (byte) 23, (byte) 0, (byte) 4, (byte) 2, (byte) 27,
			(byte) 14, (byte) 5, (byte) 20, (byte) 9, (byte) 22, (byte) 18, (byte) 11, (byte) 3, (byte) 25, (byte) 7,
			(byte) 15, (byte) 6, (byte) 26, (byte) 19, (byte) 12, (byte) 1, (byte) 40, (byte) 51, (byte) 30, (byte) 36,
			(byte) 46, (byte) 54, (byte) 29, (byte) 39, (byte) 50, (byte) 44, (byte) 32, (byte) 47, (byte) 43,
			(byte) 48, (byte) 38, (byte) 55, (byte) 33, (byte) 52, (byte) 45, (byte) 41, (byte) 49, (byte) 35,
			(byte) 28, (byte) 31, };

	private static int[] SP1 = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004,
			0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004,
			0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004,
			0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404,
			0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400,
			0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404,
			0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004,
			0x00010400, 0x00000000, 0x01010004 };

	private static int[] SP2 = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020,
			0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020,
			0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020,
			0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020,
			0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020,
			0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020,
			0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000,
			0x80100020, 0x80108020, 0x00108000 };

	private static int[] SP3 = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208,
			0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208,
			0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208,
			0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000,
			0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208,
			0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208,
			0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208,
			0x00000008, 0x08020008, 0x00020200 };

	private static int[] SP4 = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001,
			0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001,
			0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081,
			0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001,
			0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081,
			0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000,
			0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080,
			0x00800000, 0x00002000, 0x00802080 };

	private static int[] SP5 = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000,
			0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000,
			0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000,
			0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100,
			0x00000100, 0x02000000, 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000, 0x42080000,
			0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000, 0x42080100, 0x00080100, 0x42000000, 0x42080100,
			0x02080000, 0x00000000, 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000, 0x00000000,
			0x40080000, 0x02080100, 0x40000100 };

	private static int[] SP6 = { 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010, 0x20404010,
			0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010, 0x00400010, 0x20004000, 0x20000000, 0x00004010,
			0x00000000, 0x00400010, 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010, 0x20400010,
			0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000, 0x20404000, 0x20000000, 0x20004000, 0x00000010,
			0x20400010, 0x00404000, 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000, 0x20000000,
			0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000, 0x00404010, 0x20404000, 0x00000000, 0x20400010,
			0x00000010, 0x00004000, 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000, 0x20404000,
			0x20000000, 0x00400010, 0x20004010 };

	private static int[] SP7 = { 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802, 0x00200802,
			0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002, 0x00000002, 0x04000000, 0x04200002, 0x00000802,
			0x04000800, 0x00200802, 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002, 0x04200000,
			0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002, 0x04000000, 0x00200800, 0x04000000, 0x00200800,
			0x00200000, 0x04000802, 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000, 0x04000800,
			0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800, 0x00000802, 0x04000002, 0x04200802, 0x04200000,
			0x00200800, 0x00000000, 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800, 0x04000002,
			0x04000800, 0x00000800, 0x00200002 };

	private static int[] SP8 = { 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040, 0x00000040,
			0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040,
			0x10040000, 0x10000040, 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040,
			0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000, 0x00041040, 0x00040000, 0x00041040, 0x00040000,
			0x10041000, 0x00001000, 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040, 0x10000040,
			0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040, 0x00000000, 0x10041040, 0x00040040, 0x10000040,
			0x10040000, 0x10001000, 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040, 0x00001040,
			0x00040040, 0x10000000, 0x10041000 };

	/**
	 * turn the CHAR into INT type.
	 * 
	 * @param inChars
	 *            8-CHAR size of array
	 * @param outInts
	 *            2-INT size of array
	 */
	private static void scrunch(char[] inChars, int[] outInts) {
		outInts[0] = (inChars[0] & 0xff) << 24;
		outInts[0] |= (inChars[1] & 0xff) << 16;
		outInts[0] |= (inChars[2] & 0xff) << 8;
		outInts[0] |= (inChars[3] & 0xff);
		outInts[1] = (inChars[4] & 0xff) << 24;
		outInts[1] |= (inChars[5] & 0xff) << 16;
		outInts[1] |= (inChars[6] & 0xff) << 8;
		outInts[1] |= (inChars[7] & 0xff);
	}

	/**
	 * reverse operation of scrunch().
	 * 
	 * @param inInts
	 *            2-INT size of array
	 * @param outChars
	 *            8-CHAR size of array
	 */
	private static void unscrunch(int[] inInts, char[] outChars) {
		outChars[0] = (char) ((inInts[0] >>> 24) & 0xff);
		outChars[1] = (char) ((inInts[0] >>> 16) & 0xff);
		outChars[2] = (char) ((inInts[0] >>> 8) & 0xff);
		outChars[3] = (char) (inInts[0] & 0xff);
		outChars[4] = (char) ((inInts[1] >>> 24) & 0xff);
		outChars[5] = (char) ((inInts[1] >>> 16) & 0xff);
		outChars[6] = (char) ((inInts[1] >>> 8) & 0xff);
		outChars[7] = (char) (inInts[1] & 0xff);
	}

	/**
	 * 
	 * @param raw
	 *            输入32位int
	 * @param KnL
	 *            输出32位int
	 */
	private void cookey(int[] raw, int KnL[]) {
		int raw0, raw1;
		int rawi, KnLi;
		int i;

		for (i = 0, rawi = 0, KnLi = 0; i < 16; ++i) {
			raw0 = raw[rawi++];// 0,2,4...
			raw1 = raw[rawi++];// 1,3,5...
			KnL[KnLi] = (raw0 & 0x00fc0000) << 6;
			KnL[KnLi] |= (raw0 & 0x00000fc0) << 10;
			KnL[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
			KnL[KnLi] |= (raw1 & 0x00000fc0) >>> 6;
			++KnLi;
			KnL[KnLi] = (raw0 & 0x0003f000) << 12;
			KnL[KnLi] |= (raw0 & 0x0000003f) << 16;
			KnL[KnLi] |= (raw1 & 0x0003f000) >>> 4;
			KnL[KnLi] |= (raw1 & 0x0000003f);
			++KnLi;
		}
	}

	private void cpkey(int[] into) {
		for (int k = 0; k < 32; k++) {
			into[k] = KnL[k];
		}
	}

	/**
	 * 
	 * @param into
	 *            64-size of int
	 */
	private void cpDkey(int[] into) {
		cpkey(into);
		for (int k = 32; k < 64; k++) {
			into[k] = KnR[k - 32];
		}
	}

	private void usekey(int[] from) {
		for (int k = 0; k < 32; k++) {
			KnL[k] = from[k];
		}
	}

	/**
	 * 
	 * @param from
	 *            64-size of int
	 */
	private void useDkey(int[] from) {
		usekey(from);
		for (int k = 32; k < 64; k++) {
			KnR[k - 32] = from[k];
		}
	}
}
